A 6-bit bidirectional serial-in serial-out shift register.
Middle logic source is the SHIFT-LEFT/SHIFT-RIGHT selector. When set HIGH, data shifts left to right. When Set LOW, data shifts right to left.
The left logic source allows data to be clocked into the register from the left while the right logic source allows data to be clocked from the right.
Set logic sources HIGH and LOW between clock pulses to simulate a data stream shifting through register.
